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Wang Xianli Hu Yuanman Bu Rencang (Institute of Applied Ecology, Academia Sinica, Shenyang 110015)  
Landscape change is the process of landscape transformation from one phase to another, as a reault of interactions between the inner contradictions and outer factors. Using technology of remote sensing and GIS, the paper analyzed two maps of wetland types of Liaohe delta in different periods to study the changes of wetland landscape in time and space. We found that the change of the components of the studied area is not very evident, the artificial wetlands, semi natural wetlands and natural wetlands are still the main components of the area which is more than 90% of the total area. The changing tendency of wetlands is from the land to the sea. The semi natural wetlands are diminishing in recent years, and the artificial wetlands and natural wetlands are increasing comparatively. There are two main factors determining the landscape changes, which are the nature evolution itself and the human disturbances.
【Fund】: 国家自然科学基金
【CateGory Index】: P901
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